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Uncertainty in measuring laminar burning velocity from expanding methane-air flames at low pressures

Abstract : The experimental determination of laminar burning velocity remains essential to evaluate the combustion potential of any fuels but also to validate kinetic mechanisms. Recently, researchers are making great efforts to improve the accuracy of the different setups and techniques to determine this parameter. This work proposes an attempt to summarize the different factors contributing to the uncertainty of the expanding spherical flame method. In particular, the validity of two hypothesis (adiabatic flame propagation and thin flame front) is discussed in the case of stoichiometric methane-air flames in low-pressure environment (from 0.2 to 2 bar). Last, the effect of spark electrode diameters was also considered (0.2, 0.5 and 1 mm).
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https://hal.archives-ouvertes.fr/hal-02163518
Contributor : Pierre Bréquigny <>
Submitted on : Monday, June 24, 2019 - 1:37:10 PM
Last modification on : Tuesday, May 26, 2020 - 12:34:03 PM

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  • HAL Id : hal-02163518, version 1

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Pierre Brequigny, H Uesaka, Z Sliti, D Segawa, Fabrice Foucher, et al.. Uncertainty in measuring laminar burning velocity from expanding methane-air flames at low pressures. 11th Mediterranean Combustion Symposium, Jun 2019, Tenerife, Spain. ⟨hal-02163518⟩

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